# Basic circuit analysis

Note-This is not a homework problem,my question is different.I am currently confused understanding some basic behavior in a circuit. Question-Why A is not 10 volts and B 0 volts?What stops Point A from having voltage 10v?

• Because B isn’t grounded. A is 10 V, but only relative to B. Your homework question is asking for voltage A relative to ground. – winny Feb 4 '18 at 7:07
• @winny voltage A is 8.73 ..but still B can be 0 volts even if it is not grounded i solved a similar problem and simulated it too,a bit similar problem. – Paran Bharali Feb 4 '18 at 7:22
• So why did you ask? – winny Feb 4 '18 at 8:33
• @ParanJyotiBharali The 10 V source there is, by definition, maintaining a voltage difference of 10 V between A and B. That means that whatever B is, then A is 10 V higher. And whatever A is, then B is 10 V lower. Period. That's what a voltage source DOES. You cannot have 8.73 V between A and B because you have a voltage source between those two nodes. It makes CERTAIN that there is NOT 8.73 V and instead makes certain that there is 10 V between them. No ifs, ands, or buts. That's what it does. – jonk Feb 4 '18 at 12:24
• @jonk I meant to say that Voltage at A is 8.73 and Voltage at B is 10-8.3 – Paran Bharali Feb 4 '18 at 16:03